package com.cyx.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.cyx.reggie.common.BaseContext;
import com.cyx.reggie.common.CustomException;
import com.cyx.reggie.entity.*;
import com.cyx.reggie.mapper.OrderMapper;
import com.cyx.reggie.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;


/**
 * @author 陈彦西
 * @date 2024/7/20 下午3:49
 */
@Service
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders>implements OrderService {
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;
    @Autowired
    private OrderDetailService orderDetailService;

    /**
     * 用户下单
     * @param orders
     */
    @Transactional//事务监控
    public void submit(Orders orders) {
      //获得当前用户id
        Long userId = BaseContext.getCurrentId();
        //查询当前用户的购物车数据
        LambdaQueryWrapper<ShoppingCart> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCarts = shoppingCartService.list(wrapper);

        if (shoppingCarts.size() == 0||shoppingCarts ==null) {
            throw new CustomException("购物车为空，不能下单");
        }
        //查询用户数据
            User user = userService.getById(userId);
        //查询地址数据
        Long addressBookId=orders.getAddressBookId();
        AddressBook addressBook=addressBookService.getById(addressBookId);
        if (addressBook==null ) {
            throw new CustomException("用户地址信息有误，不能下单");
        }
        long orderId = IdWorker.getId();//订单号
        AtomicInteger amount = new AtomicInteger(0);
                List<OrderDetail> orderDetails= shoppingCarts.stream().map((item)->{
           OrderDetail orderDetail=new OrderDetail();
           orderDetail.setOrderId(orderId);
           orderDetail.setNumber(item.getNumber());
           orderDetail.setDishFlavor(item.getDishFlavor());
           orderDetail.setDishId(item.getDishId());
           orderDetail.setSetmealId(item.getSetmealId());
           orderDetail.setName(item.getName());
           orderDetail.setImage(item.getImage());
           orderDetail.setAmount(item.getAmount());
           amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
           return orderDetail;
                }).collect(Collectors.toList());

        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "":addressBook.getProvinceName())
               +(addressBook.getCityName() == null ? "":addressBook.getCityName())
               +(addressBook.getDistrictName() == null ? "":addressBook.getDistrictName())
               +(addressBook.getDetail() == null ? "":addressBook.getDetail()));

        //向订单表插入数据，一条数据
        this.save(orders);
        //向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(orderDetails);

        //清空购物车数据




    }
}
